Frame construction of a cabinet or cabinets for containing electronic and electric equipments

ABSTRACT

A vertical frame construction of a cabinet or cabinets for electronic and electric equipments, which is favorable in workability for mounting of internal equipments and capable of ensuring a multiplicity of equipment mounting surfaces. The frame construction arranges vertical frame legs  1  of hollow, cross sectional shape at corners, the vertical frame legs  1  having a hollow, cross sectional shape comprising first shaped sides  4  bent inside a box for containing electronic equipments, from outer edge portions  3 , second shaped sides  5  formed by bending inner ends of the first shaped sides  4  in a direction away from a corner  2 , and recessed spaces E, F defined between the first shaped sides and the second shaped sides. Also, equipment mounting holes may be provided to permit work from a side of outer walls of the cabinet, and an extent of projection of joint fittings may be reduced by providing an additional joint fitting mounting side.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the invention

[0002] The invention relates to a frame construction of a cabinet or cabinets for containing electronic and electric equipments.

[0003] 2. Prior art

[0004] Generally, cabinets for containing an electronic equipment such as switchboard cabinets or the like, and cabinets for communications equipments have a frame construction, in which vertical frame legs are arranged at respective corners (four corners) and combined with one another by means of horizontally lateral frames. The respective vertical frame legs have a hollow-shaped cross section, and rows of holes are formed on those sides of the legs, which are disposed inside a box for containing an electronic equipment, at predetermined pitches to permit various parts such as rack or the like to be mounted thereto.

[0005] 1) However, vertical frame legs used in a conventional frame construction commonly have a square-shaped or rectangular-shaped hollow cross section as shown in FIG. 50, and so only two sides perpendicular to each other face inwardly of a box for containing an electronic equipment. Therefore, only rows of holes formed on the two sides are used for mounting of equipment, and so rows of holes are in some cases insufficient in the event of an increase in the number and kinds of equipments. Also, in order to dissolve such disadvantage, vertical frame legs are partially used, in which aluminum extruded materials are used to additionally provide projecting sides outside the hollow cross section, but they become disadvantageously high in cost to be incapable of inexpensively manufacturing an electronic equipment containing box.

[0006] 2) Also, side panels 41, a front door 42, a back panel 42 and the like are commonly mounted between such vertical frames. Conventionally, hollow, vertical frames having a square cross section are used, and equipment mounting holes 44 formed on two inner sides are used for mounting of internal equipments such as equipment mounting rails, wiring support bars, wiring ducts. However, since such construction has a small number of equipment mounting sides, it cannot cope with diversification of internal equipments in recent years.

[0007] Hereupon, vertical frames have been developed, as shown in FIG. 57, such that a recess is provided inside of a hollow frame and equipment mounting holes 44 are formed on four sides thereof. With such structure, equipment mounting sides having steps in lateral and depthwise directions are defined at two locations, and so it is possible to mount two kinds of internal equipments at the same level.

[0008] However, such vertical frames are poor in workability because, as shown in FIG. 58, all sides 45, 46 directed toward outer walls abut against outer walls 47 of a front door 42 and a side panel 41 and equipment mounting holes 44 are formed on sides 48, 49 directed inward from the outer walls and sides 50, 51 of a recess inside the vertical frame, thus making it necessary to perform screwing in directions from an inside of a cabinet toward the outer walls 47 when internal equipments should be mounted. Moreover, there is a problem that there is a need of forming two kinds of equipment mounting rails 52 having different lengths, depending upon locations where they are to be mounted.

[0009] Also, in the case of, for example, mounting the equipment mounting rails 52 to the sides, they are mounted to the sides 49, 50 in parallel to the former sides. When the rails are to be mounted to the vertical frames on a front side, the front door 42 is opened and work must be effected from the front side, and when the rails are to be mounted to the vertical frames on a back side, the back panel 43 is dismounted and work must be effected from the back side. In this way, work must be effected from both the front side and the back side, which make workability poor. Also, in the case of a cabinet having been in use, interference with internal equipments makes mounting very difficult.

[0010] Besides, workability is poor because the equipment mounting holes 44 can be visually observed only in a certain angular range on the front side in the case of mounting an internal equipment to the side 50 as shown in FIG. 59. Further, with an arrangement, in which the equipment mounting rails 52 are mounted to the side 50 and a wiring duct 54 is mounted to the side 49 as shown in FIG. 59, there is a disadvantage that the wiring duct 54 must be dismounted because once the wiring duct 54 has been mounted, mounting is impossible in trying to mount additional equipment mounting rails 52 to the side.

[0011] 3) Further, in the case where cabinets for containing an electronic equipment, of the above-mentioned construction are to be connected in use, side panels 102 at a connection are dismounted as shown in FIG. 68 and connection is achieved by means of joint fittings 105 making use of equipment mounting holes 104 formed on back surfaces (surfaces on a side opposite to the front door 101) of respective vertical frames.

[0012] However, the use of ordinary vertical frames having a square cross section involves a problem of poor workability such that the joint fittings 105 project inwardly of a joint surface 106 as shown in FIG. 68 to interfere with equipments arranged between the respective cabinets, members such as cable or the like, and hands in work.

SUMMARY OF THE INVENTION

[0013] Subjects to be Solved

[0014] 1) The invention has been devised to solve the above-mentioned problems of the prior art and to provide a frame construction of a box for containing an electronic equipment, making use of vertical frame legs, of which rows of holes usable for mounting of equipments are increased more in number than those in the prior art.

[0015] 2) The invention provides a vertical frame for cabinets for containing an electronic equipment, which frame is well in workability of mounting of internal equipments, can ensure a multiplicity of equipment mounting sides, and makes equipment mounting rails of the same length or the like usable in either of inside mounting and outside mounting.

[0016] 3) The invention has been achieved to provide a vertical frame for cabinets for containing an electronic equipment, by which frame connecting fittings for connection of cabinets for containing an electronic equipment are reduced in an extent of projection and workability is improved in the case of arranging wiring of cable between the respective cabinets. In addition, another object of the invention is to provide a vertical frame for cabinets for containing an electronic equipment, the frame itself having a high strength.

[0017] Means for Solving the Subjects

[0018] 1) Hollow, vertical frame legs installed upright on four corners of a cabinet for electronic and electric equipments, achieved by the invention for solving the above subject 1) have a horizontal, cross section having a configuration, which comprises outer edge portions, first shaped sides bent from the outer edge portions in directions toward an inside of the cabinet, second shaped sides formed by bending inside ends of the first shaped sides in directions away from the corner, and in which recessed spaces are defined in cross sectional regions interposed between the first shaped sides and the second shaped sides.

[0019] In addition, the vertical frame legs can comprise a recessed space at the corner, and the vertical frame legs can be T-shaped in cross section. Further, a joint fitting or fittings can be mounted in the recessed spaces to connect adjacent vertical frame legs to each other.

[0020] With the frame construction of a cabinet or cabinets for electronic and electric equipments, according to the invention, the vertical frame legs arranged at the respective corners have a specific cross sectional shape not found in the prior art, so that many rows of holes can be formed inside a cabinet to afford convenience in mounting of equipments. Also, in the case where the vertical frame legs are configured to have a recessed space at the corner and are substantially T-shaped in cross section, it is possible to perform mounting of equipment mounting fittings and joint fittings with the use of such recessed space.

[0021] 2) According to the invention achieved for solving the above subject 2), vertical frame legs installed upright on four corners of a cabinet for electronic and electric equipments comprises shaped sides for outside mounting, which are disposed in parallel to outer wall surfaces of the cabinet and inside of the cabinet from the outer wall surfaces and include equipment mounting holes permitting work from the outer wall surfaces of the cabinet.

[0022] Also, shaped sides for inside mounting can be added, which are disposed in parallel to the shaped sides for outside mounting and further inside of the cabinet therefrom, and include equipment mounting holes permitting work from a side of an inner chamber of the cabinet. Also, shaped sides for vertical mounting can be added, which are disposed perpendicular to the shaped sides for outside mounting and the shaped sides for inside mounting and on a side remote from the corner of the cabinet, and include equipment mounting holes.

[0023] Also, there can be provided an arrangement, which comprises a first hollow portion disposed at the corner of the cabinet, and a second hollow portion projecting toward the inner chamber from the first hollow portion and provided with the shaped sides for outside mounting, the shaped sides for inside mounting and the shaped sides for vertical mounting. In addition, the equipment mounting holes on the shaped sides for outside mounting, and the equipment mounting holes on the shaped sides for inside mounting are preferably provided at substantially the same distance from the other outer wall surface of the cabinet perpendicular to the outer wall surface of the cabinet.

[0024] 3) According to the invention achieved for solving the above subject 3), vertical frame legs installed upright on four corners of a cabinet for electronic and electric equipments comprise a first equipment mounting side in parallel to a front door, a joint fitting mounting side, which is disposed in parallel to the first equipment mounting side and nearer to the front door than the first equipment mounting side is, and an outer end of which is connected to a side panel abutting side, and a joint fitting mounting space on a side of the joint fitting mounting side opposite to the front door.

[0025] In addition, a joint fitting mounting portion provided with the joint fitting mounting side can be made hollow. Also, there can be provided a second equipment mounting side perpendicular to the joint fitting mounting side and the first equipment mounting side. Also, there can be provided a third equipment mounting side in parallel to the second equipment mounting side. Further, the joint fitting mounting side can be made to serve as a fourth equipment mounting side, and a seal portion in contact with the front door can be made hollow.

BRIEF DESCRIPTION OF THE DRAWINGS

[0026]FIG. 1 is a schematic plan view showing a cabinet for containing electronic and electric equipments, in which a frame structure of the invention is employed.

[0027]FIG. 2 is a horizontal, cross sectional view showing a vertical frame leg according to a 1st embodiment of the invention.

[0028]FIG. 3 is a horizontal, cross sectional view showing a vertical frame leg according to a 2nd embodiment of the invention.

[0029]FIG. 4 is a horizontal, cross sectional view showing a vertical frame leg according to a 3rd embodiment of the invention.

[0030]FIG. 5 is a horizontal, cross sectional view showing a vertical frame leg according to a 4th embodiment of the invention.

[0031]FIG. 6 is a horizontal, cross sectional view showing a vertical frame leg according to a 5th embodiment of the invention.

[0032]FIG. 7 is a horizontal, cross sectional view showing a vertical frame leg according to a 6th embodiment of the invention.

[0033]FIG. 8 is a horizontal, cross sectional view showing a vertical frame leg according to a 7th embodiment of the invention.

[0034]FIG. 9 is a horizontal, cross sectional view showing a vertical frame leg according to an 8th embodiment of the invention.

[0035]FIG. 10 is a horizontal, cross sectional view showing a vertical frame leg according to a 9th embodiment of the invention.

[0036]FIG. 11 is a horizontal, cross sectional view showing a vertical frame leg according to a 10th embodiment of the invention.

[0037]FIG. 12 is a horizontal, cross sectional view showing a vertical frame leg according to an 11th embodiment of the invention.

[0038]FIG. 13 is a horizontal, cross sectional view showing a vertical frame leg according to a 12th embodiment of the invention.

[0039]FIG. 14 is a horizontal, cross sectional view showing a vertical frame leg according to a 13th embodiment of the invention.

[0040]FIG. 15 is a horizontal, cross sectional view showing a vertical frame leg according to a 14th embodiment of the invention.

[0041]FIG. 16 is a horizontal, cross sectional view showing a vertical frame leg according to a 15th embodiment of the invention.

[0042]FIG. 17 is a horizontal, cross sectional view showing a vertical frame leg according to a 16th embodiment of the invention.

[0043]FIG. 18 is a horizontal, cross sectional view showing a vertical frame leg according to a 17th embodiment of the invention.

[0044]FIG. 19 is a horizontal, cross sectional view showing a vertical frame leg according to an 18th embodiment of the invention.

[0045]FIG. 20 is a horizontal, cross sectional view showing a vertical frame leg according to a 19th embodiment of the invention.

[0046]FIG. 21 is a horizontal, cross sectional view showing a vertical frame leg according to a 20th embodiment of the invention.

[0047]FIG. 22 is a horizontal, cross sectional view showing a vertical frame leg according to a 21st embodiment of the invention.

[0048]FIG. 23 is a horizontal, cross sectional view showing a vertical frame leg according to a 22nd embodiment of the invention.

[0049]FIG. 24 is a horizontal, cross sectional view showing a vertical frame leg according to a 23rd embodiment of the invention.

[0050]FIG. 25 is a horizontal, cross sectional view showing a vertical frame leg according to a 24th embodiment of the invention.

[0051]FIG. 26 is a horizontal, cross sectional view showing a vertical frame leg according to a 25th embodiment of the invention.

[0052]FIG. 27 is a horizontal, cross sectional view showing a vertical frame leg according to a 26th embodiment of the invention.

[0053]FIG. 28 is a horizontal, cross sectional view showing a vertical frame leg according to a 27th embodiment of the invention.

[0054]FIG. 29 is a horizontal, cross sectional view showing a vertical frame leg according to a 28th embodiment of the invention.

[0055]FIG. 30 is a horizontal, cross sectional view showing a vertical frame leg according to a 29th embodiment of the invention.

[0056]FIG. 31 is a horizontal, cross sectional view showing a vertical frame leg according to a 30th embodiment of the invention.

[0057]FIG. 32 is a horizontal, cross sectional view showing a vertical frame leg according to a 31st embodiment of the invention.

[0058]FIG. 33 is a horizontal, cross sectional view showing a vertical frame leg according to a 32nd embodiment of the invention.

[0059]FIG. 34 is a horizontal, cross sectional view showing a vertical frame leg according to a 33rd embodiment of the invention.

[0060]FIG. 35 is a horizontal, cross sectional view showing a vertical frame leg according to a 34th embodiment of the invention.

[0061]FIG. 36 is a horizontal, cross sectional view showing a vertical frame leg according to a 35th embodiment of the invention.

[0062]FIG. 37 is a horizontal, cross sectional view showing a vertical frame leg according to a 36th embodiment of the invention.

[0063]FIG. 38 is a horizontal, cross sectional view showing a vertical frame leg according to a 37th embodiment of the invention.

[0064]FIG. 39 is a horizontal, cross sectional view showing a vertical frame leg according to a 38th embodiment of the invention.

[0065]FIG. 40 is a horizontal, cross sectional view showing a vertical frame leg according to a 39th embodiment of the invention.

[0066]FIG. 41 is a horizontal, cross sectional view showing a vertical frame leg according to a 40th embodiment of the invention.

[0067]FIG. 42 is a horizontal, cross sectional view showing a vertical frame leg according to a 41st embodiment of the invention.

[0068]FIG. 43 is a horizontal, cross sectional view showing a vertical frame leg according to a 42nd embodiment of the invention.

[0069]FIG. 44 is a horizontal, cross sectional view showing a vertical frame leg according to a 43rd embodiment of the invention.

[0070]FIG. 45 is a horizontal, cross sectional view showing a vertical frame leg according to a 44th embodiment of the invention.

[0071]FIG. 46 is a horizontal, cross sectional view showing a cabinet for containing an electronic and electric equipment, in which T-shaped vertical frames of the invention are used.

[0072]FIG. 47 is a horizontal, cross sectional view showing a state, in which adjacent vertical frame legs are connected to each other.

[0073]FIG. 48 is a view illustrating a state, in which the vertical frame according to the 37th embodiment of the invention is used.

[0074]FIG. 49 is a view illustrating a state, in which the vertical frame according to the 47th embodiment of the invention is used.

[0075]FIG. 50 is a horizontal, cross sectional view showing an example of the prior art.

[0076]FIG. 51 is a cross sectional view showing a 48th embodiment of the invention.

[0077]FIG. 52 is a horizontal, cross sectional view showing a cabinet, for which the vertical frame according to the 48th embodiment of the invention is used.

[0078]FIG. 53 is a horizontal, cross sectional view showing a state, in which equipment mounting rails are mounted to front and rear portions of the vertical frames according to the 49th embodiment of the invention.

[0079]FIG. 54 is a horizontal, cross sectional view showing a state, in which equipment mounting rails an d a wiring duct are mounted to front and rear portions of the vertical frames according to the 49th embodiment of the invention.

[0080]FIG. 55 is a cross sectional view showing a 50th embodiment of the invention.

[0081]FIG. 56 is a horizontal, cross sectional view showing an example of the prior art.

[0082]FIG. 57 is a horizontal, cross sectional view showing another example of the prior art.

[0083]FIG. 58 is a horizontal, cross sectional view showing a problem of the prior art shown in FIG. 57.

[0084]FIG. 59 is a horizontal, cross sectional view showing another problem of the prior art shown in FIG. 57.

[0085]FIG. 60 is a horizontal, cross sectional view showing a vertical frame according to a 51st embodiment of the invention.

[0086]FIG. 61 is a horizontal, cross sectional view showing a state, in which vertical frames according to the invention are connected to each other.

[0087]FIG. 62 is a horizontal, cross sectional view showing a state, in which vertical frames are connected to each other by means of L-shaped joint fittings according to the invention.

[0088]FIG. 63 is a horizontal, cross sectional view showing a vertical frame according to a 52nd embodiment of the invention.

[0089]FIG. 64 is a horizontal, cross sectional view showing a vertical frame according to a 53rd embodiment of the invention.

[0090]FIG. 65 is a horizontal, cross sectional view showing a vertical frame according to a 54th embodiment of the invention.

[0091]FIG. 66 is a horizontal, cross sectional view showing a vertical frame according to a 55th embodiment of the invention.

[0092]FIG. 67 is a horizontal, cross sectional view showing a vertical frame according to a 56th embodiment of the invention.

[0093]FIG. 68 is a horizontal, cross sectional view showing a prior cabinet for containing electronic and electric equipments.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0094] 1) 1st to 47th preferred embodiments of the invention for a first subject will be described below.

[0095]FIG. 1 is a schematic plan view showing a cabinet for electronic and electric equipments, in which a frame structure of the invention is employed, and at four corners of which are arranged vertical frame legs 1. The respective vertical frame legs 1 have a special hollow cross-sectional shape described in details later, and a row of holes for mounting of an equipment. The vertical frame legs 1 can be formed by roll forming. Like the prior art, horizontal frames are installed between these vertical frame legs 1, to which side plates, a back plate and a door are mounted to constitute a cabinet. The invention has a feature in the use of vertical frame legs 1 having a special hollow cross-sectional shape, which will be described below in details.

[0096]FIG. 2 is a horizontal, cross sectional view showing a vertical frame leg 1 according to a 1st embodiment, comprising outer edge portions 3, 3 disposed on outer wall surfaces A, B extending perpendicular to each other from a corner 2 of an electronic and electric equipment, first shaped sides 4, 4 bent inside the cabinet from the outer edge portions 3, 3, and second shaped sides 5, 5 provided by bending inner end of the first shaped sides 4, 4 in directions away from the corner 2. Two concave-shaped spaces E, F are defined between the first shaped sides 4 and the second shaped sides 5.

[0097] In an example shown in FIG. 2, the outer edge portions 3, the first shaped sides 4 and the second shaped sides 5, respectively, are bent perpendicularly. Also, third shaped sides 6, 6 are formed to be bent perpendicularly at tip ends of the second shaped sides 5, 5 on both sides, and have tip ends 7 connected to each other by way of welding or the like to constitute a continuous hollow, cross sectional shape. However, the tip ends 7 of the third shaped sides 6, 6 may not necessarily be connected to each other but suffice to constitute a substantially hollow, cross sectional shape. In addition, X, Y represents a diagonal line of the vertical frame leg 1.

[0098] Rows of holes 8 for mounting of an equipment is formed on the first shaped sides 4, the second shaped sides 5 and the third shaped sides 6. Rows of holes 8 are formed vertically, and only one hole, respectively, is shown in the cross sectional view. As a result, six columns of rows of holes 8 can be formed on the entire vertical frame leg 1, so that it is possible to mount a variety of parts-more functionally than prior quadrilateral-shaped vertical frame legs.

[0099]FIG. 3 is a horizontal, cross sectional view showing a vertical frame leg 1 according to a second embodiment, in which fourth shaped sides 9 are formed by recessing the tip ends 7 of the third shaped sides 6, 6 according to the embodiment of FIG. 2 toward the corner 2. Since rows of holes 8 can be formed on the fourth shaped sides 9, eight columns of rows of holes 8 can be formed in all. Since the remaining constitution is the same as that shown in FIG. 2, the same reference numerals designate the corresponding parts and an explanation therefor will be omitted.

[0100]FIG. 4 is a horizontal, cross sectional view showing a vertical frame leg 1 according to a 3rd embodiment, in which the first shaped sides 4 of FIG. 2 are shortened and two concave-shaped spaces E, F between the first shaped sides and the second shaped sides 5 are shaped to be rectangular. Also, tip end portions of the third shaped sides 6, 6 are twice bent perpendicular inside and outside to form a fourth shaped side 9 and a tenth shaped side 10. In this case, it is possible to form ten columns of holes in all.

[0101]FIG. 5 is a horizontal, cross sectional view showing a vertical frame leg 1 according to a 4th embodiment, in which a slant shaped side 11 is provided between tip end portions of the second shaped sides 5 on both sides. Since a column of holes 8 can be formed on the slant shaped side 11, it is possible to form five columns of holes 8 in all.

[0102]FIG. 6 is a horizontal, cross sectional view showing a vertical frame leg 1 according to a 5th embodiment, in which a slant shaped side 11 is provided between tip end portions of the third shaped sides 6 on both sides. Since a column of holes 8 can be formed on the slant shaped side 11, it is possible to form seven columns of holes 8 in all.

[0103]FIG. 7 is a horizontal, cross sectional view showing a vertical frame leg 1 according to a 6th embodiment, in which the tenth shaped side 10 in the 3rd embodiment shown in FIG. 4 is replaced by the slant shaped side 11. In this embodiment, eight columns of holes 8 can be formed in all.

[0104]FIG. 8 is a horizontal, cross sectional view showing a vertical frame leg 1 according to a 7th embodiment, in which the outer edge portions 3, 3 in the 1st embodiment shown in FIG. 2 are recessed inward at the corner 2 to define a square-shaped recessed space Z exteriorly. The embodiment is the same as the 1st embodiment in all the remaining respects. However, in the case where the recess at the corner 2 is made exceedingly large, the outer edge portions 3, 3 are in some cases reduced in length to be brought into point contact with the outer wall surfaces A, B.

[0105]FIG. 9 is a horizontal, cross sectional view showing a vertical frame leg 1 according to an 8th embodiment, in which the outer edge portions 3, 3 in the 2nd embodiment shown in FIG. 3 are recessed inward at the corner 2 to define a square-shaped recessed space Z exteriorly. The embodiment is the same as the 2nd embodiment in all the remaining respects.

[0106]FIG. 10 is a horizontal, cross sectional view showing a vertical frame leg 1 according to a 9th embodiment, in which the outer edge portions 3, 3 in the 3rd embodiment shown in FIG. 4 are recessed inward at the corner 2 to define a square-shaped recessed space Z exteriorly. The embodiment is the same as the 3rd embodiment in all the remaining respects.

[0107]FIG. 11 is a horizontal, cross sectional view showing a vertical frame leg 1 according to a 10th embodiment, in which the outer edge portions 3, 3 in the 4th embodiment shown in FIG. 5 are recessed inward at the corner 2 to define a square-shaped recessed space Z exteriorly. The embodiment is the same as the 4th embodiment in all the remaining respects.

[0108]FIG. 12 is a horizontal, cross sectional view showing a vertical frame leg 1 according to an 11th embodiment, in which the outer edge portions 3, 3 in the 5th embodiment shown in FIG. 6 are recessed inward at the corner 2 to define a square-shaped recessed space Z exteriorly. The embodiment is the same as the 5th embodiment in all the remaining respects.

[0109]FIG. 13 is a horizontal, cross sectional view showing a vertical frame leg 1 according to a 12th embodiment, in which the outer edge portions 3, 3 in the 6th embodiment shown in FIG. 7 are recessed inward at the corner 2 to define a square-shaped recessed space Z exteriorly. The embodiment is the same as the 6th embodiment in all the remaining respects.

[0110] FIGS. 14 to 19 are horizontal, cross sectional views showing vertical frame legs 1 according to 13th to 18th embodiments. These vertical frame legs are designed such that the outer edge portions 3, 3 in the 1st to 6th embodiments shown in FIGS. 2 to 7 are recessed inward in two steps at the corner 2 to define L-shaped recessed spaces Z. Since the remaining constitution is the same as those of the 1st to 6th embodiments, an explanation therefor will be omitted.

[0111] FIGS. 20 to 25 are horizontal, cross sectional views showing vertical frame legs 1 according to 19th to twenty-fourth embodiments. These vertical frame legs are designed such that the outer edge portions 3, 3 in the 1st to 6th embodiments shown in FIGS. 2 to 7 are recessed obliquely stepwise at the corner 2 to define substantially pentagonal-shaped recessed spaces Z. Since the remaining constitution is the same as those of the 1st to 6th embodiments, an explanation therefor will be omitted.

[0112] FIGS. 26 to 31 are horizontal, cross sectional views showing vertical frame legs 1 according to 25th to 30th embodiments. These vertical frame legs are designed such that the outer edge portions 3, 3 in the 1st to 6th embodiments shown in FIGS. 2 to 7 are recessed obliquely at the corner 2 to define substantially triangular-shaped recessed spaces Z. In these cases, the outer edge portions 3, 3 disposed on the outer wall surfaces A, B extending perpendicularly to each other from the corner 2 comprise only bent portions. Since the remaining constitution is the same as those of the 1st to 6th embodiments, an explanation therefor will be omitted.

[0113] FIGS. 32 to 37 are horizontal, cross sectional views showing vertical frame legs 1 according to 31st to 36th embodiments. These vertical frame legs are designed such that the outer edge portions 3, 3 in the 1st to 6th embodiments shown in FIGS. 2 to 7 are chamfered at the corner 2 to define triangular-shaped recessed spaces Z. Since the remaining constitution is the same as those of the 1st to 6th embodiments, an explanation therefor will be omitted.

[0114] FIGS. 38 to 43 are horizontal, cross sectional views showing vertical frame legs 1 according to 37th to 42nd embodiments. These vertical frame legs are designed such that the outer edge portions 3, 3 in the 1st to 6th embodiments shown in FIGS. 2 to 7 are recessed at the corner 2 to define rectangular-shaped recessed spaces Z. In these embodiments, since a portion corresponding to the second shaped side 5 is short, a portion corresponding to the concave-shaped space E is little and only a concave-shaped space F is formed substantially.

[0115] In 43rd and 44th embodiments shown in FIGS. 44 and 45, one of the second shaped sides 5 is not provided on the vertical frame leg 1 at all. In FIG. 44, a first shaped side 4 formed by bending a tip end of an outer edge portion 3 on the outer wall surface A extends straight to connect to a third shaped side 6 extending from the opposite side. Therefore, only a concave-shaped space F is formed on one side. In FIG. 45, only a concave-shaped space E is formed on one side. In either of vertical frame legs 1 according to the embodiments, a recessed space Z is formed at the corner 2 and so the frame legs assume a T-shaped cross section.

[0116] With the vertical frame legs 1 having a T-shaped cross section, the concave-shaped space E or F and the recessed space Z are made use of, as shown in FIG. 46, to conveniently mount a door 21, side plates 22, a back plate 23 and the like, and can contain the same without having ends thereof projecting outside. In addition, hook-type joint fittings 24 call catch mount the side plates 22, the back plate 23 and the like to the vertical frame legs 1 only at several locations in a vertical direction, and so rows of holes 8 on surfaces, to which these joint fittings 24 are mounted, can be used for mounting of equipments. In FIG. 46, rows of holes 8 on the vertical frame legs 1 are used for mounting of parts such as equipment mounting rails 205 (refer to FIG. 48), receptacles 201, wire retaining bars 203, wiring ducts 202 and so on. In addition, in the case where the vertical frame legs 1 include a slant shaped side 11, receptacles, wire retaining bars and the like can be mounted in a slant manner, and joint fittings on both ends of equipment mounting rails, wire retaining bars and the like suffice to be inclined.

[0117]FIG. 47 is a view showing a 46th embodiment corresponding to claim 4. The reference numeral 1 designates a left front frame of a right box, and 1′ a right front frame of a left box. In the figure, the vertical frames 1, 1′ are shown as being connected to each other. Here, the right, vertical frame 1 has the same shape as that shown in FIG. 38, and the left, vertical frame 1′ assumes a mirror image of the frame 1. In the example shown, joint fitting 25 are installed in the recessed spaces F of the vertical frames 1, 1′ to eliminate the possibility that injury is caused by interference with the joint fittings 25 during the mounting work of internal equipments. Also, the screws 26 can engage with the hollow portions of the vertical frames 1, 1′, which increases the connections in mounting strength. In addition, packings 27 on the back surfaces of the doors 21 can be brought into contact with the outer edge portions 3, 3 of the vertical frames 1, 1′ to present sure waterproof effects.

[0118] Besides, the joint fittings 25 can be also mounted about the recessed spaces Z at the corners. In this case, the joint fittings 25 are disposed on a side (lower side) of the doors 21 in FIG. 47. Thus, it is possible according to the invention to mount the joint fittings 25 on either of inside and outside of a cabinet for electronic and electric equipments. In either case, the joint fittings 25 are installed only at several locations, and so it goes without saying that rows of holes 8 on those surfaces, to which such joint fittings 25 are mounted, can be used for mounting of equipments.

[0119]FIG. 48 is a view illustrating a state of use of a vertical frame leg according to the 37th embodiment of FIG. 38. In the example shown, a recessed space Z of a vertical frame leg 1 are long horizontally to face a door side to receive a back body of a handle 204 of the door. An outer edge portion 3 on a side of a door 31 is small in width as compared with an outer edge portion 3 on a side of a side wall, and the outer edge portion 3 on the side of the side wall is large in width as compared with the outer edge portion 3 on the side of the door 31. Since the door 31 is composed of a rotating body fixed at its one end by a hinge and adapted to be locked at the other end thereof by the handle 204, the outer edge portion 3 on the side of the door is small in width, as compared with the outer edge portion 3 on the side of the side wall, in order to uniformly apply a pressing force on a packing 27 of the door and increase the pressing force. Also, since catches, screws or the like cause the outer edge portion on the side of the side wall to uniformly apply a pressing force on a packing 27 of the door, the outer edge portion on the side of the side wall needs not be small in width like the outer edge portion 3 on the side of the door 31, but is large in width as compared with the outer edge portion 3 on the side of the door 31, in order to have strength in the case of using joint fittings as in the 46th embodiment shown in FIG. 47. Further, rows of holes 8 are not formed in a second shaped side 5 connected to a first shaped side 4 on the side of the door 31, and the second shaped side 5 is small in width as compared with a second shaped side 5, which is connected to a first shaped side 4 the side of the side wall and is provided with rows of holes 8, whereby equipment mounting rails 205 (refer to FIG. 48) can be mounted on the first shaped side 4 on the side of the door 31 and wiring ducts 202 partially cut out and extending in the same direction as that of the vertical frame can be mounted on the second shaped side 5, while the back body of the handle of the door is received in the recessed space Z and the vertical frame is not large in cross section.

[0120]FIG. 49 is a horizontal, cross sectional view showing a vertical frame leg according to a 47th embodiment, which is similar to the vertical frame leg according to the 37th embodiment of FIG. 38 but is formed by joining two members formed by bending, which is easier than roll forming. The two members are welded and connected to each other at fixed portions 30, which comprise sides projecting outward beyond outer edge portions 3 on a side of a side wall, and at fixed portions 32, which comprise sides projecting from inner sides of second shaped sides 5. The fixed portions 30 are directed perpendicular toward the side wall, and have a thickness of two sheets to be sufficient to press against the packing. In addition, the two members may be connected to each other at other locations than those in this embodiment, and thus may be connected to each other at portions of first shaped sides 4 and the second shaped sides 5 and rows of holes 8 may be formed on the fixed portions.

[0121] 2) 48th to 50th preferred embodiments of the invention for the subject 2 will be described below.

[0122] A vertical frame according to the 48th embodiment is constructed to comprise a first hollow portion 61 disposed at a corner 60 of a cabinet and a second hollow portion 62 projecting toward an inner chamber of the cabinet from the first hollow portion 61. Provided continuously around the first hollow portion 61 are a first shaped side 63, a second shaped side 64, a third shaped side 65 and a fourth shaped side 66, adjacent ones of which are bent at right angles. Also, provided continuously around the second hollow portion 62 are a fifth shaped side 67, a sixth shaped side 68, a seventh shaped side 69, and an eighth shaped side 70, adjacent ones of which are bent at right angles.

[0123] The second shaped side 64 and the third shaped side 65 contact with a front door 42 and a side panel 41, which constitute outer wall surfaces of the cabinet, and these shaped sides are not formed with holes for mounting of equipments. However, the remaining shaped sides, respectively, are formed with holes 44 for mounting of equipments.

[0124] The fifth shaped side 67 about the second hollow portion 62 corresponds to an outer mounting shaped side recited in claim 5 to be disposed in parallel to the outer wall surfaces (the side panel 41 or the third shaped side 65) of the cabinet and inside the cabinet away from the outer wall surfaces. The equipment mounting holes 44 formed in the fifth shaped side 67 permit work from the outer wall of the cabinet.

[0125] The seventh shaped side 69 about the second hollow portion 62 corresponds to an inner mounting shaped side recited in claim 6. The seventh shaped side 69 is disposed in parallel to the fifth shaped side 67, which constitutes an outer mounting shaped side, and inside the cabinet away from the fifth shaped side 67. The equipment mounting holes 44 formed in the seventh shaped side 69 permit work from an inner chamber of the cabinet.

[0126] Further, the sixth shaped side 68 about the second hollow portion 62 corresponds to a vertical mounting shaped side recited in claim 7. The sixth shaped side 68 is perpendicular to the outer mounting shaped side (the fifth shaped side 67) and the inner mounting shaped side (the seventh shaped side 69), and disposed on a side distant from the corner 60 of the cabinet to have the equipment mounting holes 44.

[0127] In addition, as recited in claim 9, the equipment mounting holes 44 on the outer mounting shaped side (the fifth shaped side 67) and the equipment mounting holes 44 on the inner mounting shaped side (the seventh shaped side 69) are designed to be disposed substantially at the same distance from the other outer wall surface (the front door 42) of the cabinet perpendicular to the outer wall surface (the side panel 41) of the cabinet.

[0128]FIGS. 53 and 54 are views showing a 49th embodiment, in which vertical frames are changed in cross sectional shape. In this embodiment, a rectangular-shaped recess 35 for mounting of a hinge is provided at the corner about the first hollow portion 61, and the eighth shaped side 70 is made slant and short in length. Any equipment mounting holes are not formed in the second shaped side 64, the third shaped side 65 and the eighth shaped side 70. However, the first shaped side 63 and the fourth shaped side 66 about the first hollow portion 61, and the fifth shaped side 67, the sixth shaped side 68 and the seventh shaped side 69 about the second hollow portion 62, respectively, are formed with equipment mounting holes 44. Since the remaining constitution is the same as that of the 48th embodiment, the same reference numerals designate the corresponding parts and an explanation therefor will be omitted.

[0129] In the above-mentioned embodiments, relationships among shaped sides have been explained. For example, the sixth shaped side 68 and the seventh shaped side 69 are connected directly to each other in perpendicular manner but may be connected indirectly to each other by way of an additional connecting surface such as a slope or a recess. What is important is that sides in the above-mentioned positional relationships are present, and is not limited to direct connection.

[0130] With the vertical frames constructed according to the invention, in the case of mounting of the equipment mounting rails 52 from outside of the sides, the side panel 41 is removed as shown in FIG. 53 and then the mounting rails can be easily fixed to the equipment mounting holes 44 of the outer mounting shaped sides (the fifth shaped sides 67) by means of screws 36 (effects of the invention according to claim 5).

[0131] Also, in the case of mounting of other parts such as wiring ducts 37 and so on, work is performed from both sides of the vertical frames. In this case, since the second hollow portion 62 projects further toward the inner chamber than the first hollow portion 61, it is possible to directly observe the equipment mounting holes 44 instead of seeing slantwise as in FIG. 59, and so workability is favorable. Also, the equipment mounting rail 52 mounted to the outer mounting shaped side (the fifth shaped side 67) can be made at the same level as the wiring duct 37 mounted to the inner mounting shaped side (the seventh shaped side 69) is (effects of the invention according to claim 6).

[0132] Further, the equipment mounting holes 44 on the outer mounting shaped side (the fifth shaped side 67) and the equipment mounting holes 44 on the inner mounting shaped side (the seventh shaped side 69) are designed to be disposed substantially at the same distance from the other outer wall surface (the front door 42) of the cabinet perpendicular to the outer wall surface (the side panel 41) of the cabinet, whereby the equipment mounting rails 52, 52 having the same length can be mounted on inner and outer surfaces as shown in FIG. 53. Therefore, there is no need of manufacturing two kinds of equipment mounting rails 52 having different lengths (effects of the invention according to claim 9). In addition, while the equipment mounting holes 44 are slightly offset in position in FIG. 53, such offset can be accommodated for by making mount holes of the equipment mounting rails 52 elongated.

[0133] While the eighth shaped side 70 is a slant, short side in the 49th embodiment, the eighth shaped side 70 itself may be dispensed with and the seventh shaped side 69 may be flush with the first shaped side 63. Also, the hollow portions may be constructed by partially cutting the shaped sides instead of being fully surrounded therearound.

[0134]FIG. 55 is a view showing a 50th embodiment of a vertical frame according to the invention. A vertical frame according to this embodiment comprises an outer mounting shaped side 67 having equipment mounting holes 44, which permit work from sides of outer walls of a cabinet, an inner mounting shaped side 69 having equipment mounting holes 44, which permit work from a side of an inner chamber of the cabinet, a vertical mounting shaped side 68 and the like. Also, the vertical frame comprises a first hollow portion 61 disposed at a corner of the cabinet, and a second hollow portion 62 projecting toward the inner chamber of the cabinet from the first hollow portion 61. Further, the equipment mounting holes 44 on the outer mounting shaped side 67 and the equipment mounting holes 44 on the inner mounting shaped side 69 are designed to be disposed substantially at the same distance from an outer wall surface (front door 42) of the cabinet. Since the embodiment has the same function and effect as those described above, the same reference numerals designate the corresponding parts and an explanation therefor will be omitted.

[0135] 3) Preferred embodiments of the invention for the subject 3 will be described below.

[0136]FIG. 60 is a horizontal, cross sectional view showing a 51st embodiment of a vertical frame according to the invention, the vertical frame having a hollow construction as a whole formed by bending metallic sheet. However, the hollow construction may be formed by partially cutting formed surfaces instead of adopting a perfect hollow construction. In FIG. 60, the reference numeral 110 designates a seal portion composed of a U-shaped curved, hollow outer edge portion adapted to abut against a back surface of a front door 101. Formed successively from a base of the outer edge portion are a first shaped side 111, a second shaped side 112, a third shaped side 113, a fourth shaped side 114, a fifth shaped side 115, a sixth shaped side 116, a seventh shaped side 117 and an eighth shaped side 118. In this embodiment, the respective shaped sides except the seventh shaped side 117 are bent perpendicular to one another.

[0137] Among these shaped sides, the second shaped side 112 is a side panel abutting side adapted to abut against a side panel 102, and the vertical frame shown in FIG. 60 is disposed at a left, upper corner of a cabinet for electronic and electric equipments. In addition, the third to eighth shaped sides (except the seventh shaped side 117), respectively, are formed with equipment mounting holes 104.

[0138] The fifth shaped side 115 is a first equipment mounting side in parallel to the front door 101 and recited in claim 10. Such first equipment mounting side is made use of for mounting of equipment mounting rails and so on.

[0139] The third shaped side 113 is a joint fitting mounting side recited in claim 10. The third shaped side 113 is in parallel to the first equipment mounting side (the fifth shaped side 115) to be disposed nearer to the front door 101 than the first equipment mounting side is. Also, an outer end of the third shaped side 113 is connected to the second shaped side 112 being a side panel abutting side. A joint fitting mounting space 120 is defined on a side of the third shaped side 113 opposite to the front door 101 as shown in the figure. As shown in FIGS. 61 and 62, a joint fitting or joint fittings 105 are mounted in the joint fitting mounting space 120. As recited in claim 11, since a joint fitting mounting section provided with the joint fitting mounting side is hollow, it is possible to increase the mechanical strength for rigid connection.

[0140] The fourth shaped side 114 is a second equipment mounting side recited in claim 12. The fourth shaped side 114 is perpendicular to the joint fitting mounting side 113 and the fifth shaped side 115, and mounts thereto equipment mounting rails and so on.

[0141] The sixth shaped side 116 is a third equipment mounting side recited in claim 13. The sixth shaped side 116 is in parallel to the fourth shaped side 114 and mounts thereto equipment mounting rails and so on. In this manner, the vertical frame according to the embodiment comprises many equipment mounting sides to enable mounting thereto various inner equipments.

[0142]FIG. 61 is a horizontal, cross sectional view showing a construction, in which the vertical frames shown in FIG. 60 are connected to each other. As shown in the figure, the equipment mounting holes 104 formed on the joint fitting mounting sides (the third joint fitting mounting sides 113) of both the vertical frames are made use of to fix a plate-shaped joint fitting 105 by means of bolts 121, thus enabling rigidly connecting the adjacent vertical frames to each other. In this state, the joint fitting 105 is completely received in the joint fitting mounting space 120 to be prevented from projecting inward beyond the first equipment mounting side 115. Accordingly, the joint fitting is free from interference with members, such as equipments, cable and so on, arranged between the respective cabinets and hand during work as experienced in the prior art, and so it is possible to improve workability in equipment mounting and cable wiring.

[0143]FIG. 61 is a horizontal, cross sectional view showing a construction, in which the adjacent vertical frames are connected to each other with the use of L-shaped joint fittings 105. As shown in the figure, in this case, the both vertical frames are rigidly connected to each other by inserting into holes of the joint fitting mounting sides (the third shaped sides 113) hooks 152 provided projectingly on one sides 151 of the joint fittings 105 and connecting the other sides 153 of the joint fittings 105 to each other by means of bolts 122. In this case, ends of the sides 153 of the L-shaped joint fittings 105 project from the joint fitting mounting space 120 but an extent of such projection is greatly small as compared with the prior arrangement devoid of the joint fitting mounting space 120, so that workability in equipment mounting and cable wiring is improved.

[0144] In addition, the joint fittings 105 are installed only at several vertical locations on the vertical frames and not at the remaining portions of the joint fitting mounting sides 113, so that the joint fitting mounting sides 113 can be also used as fourth equipment mounting sides as recited in claim 14.

[0145] Only the relationships among the shaped sides have been explained in the above embodiment. For example, while the second shaped side 112 and the third shaped side 113 are connected directly to each other, they may be connected indirectly to each other by an additional, slant or concave connection side. What is important is that the above-mentioned positional relationships are present, and is not limited to direct connection of the respective sides.

[0146] FIGS. 63 to 67 show other embodiments of the invention. In the respective figures, a vertical frame is disposed at a left, upper corner in the same manner as shown in FIG. 60, and the same reference numerals designate shaped sides corresponding to the respective shaped sides in FIG. 60. In addition, equipment mounting holes 104 are represented by center lines. Like the vertical frame shown in FIG. 60, a vertical frame according to any one of the embodiments comprises a seal portion 110, a second shaped side 112 (side panel abutting side), a third shaped side 113 (joint fitting mounting side), a fourth shaped side 114 (second equipment mounting side), a fifth shaped side 115 (first equipment mounting side), and a sixth shaped side 116 (third equipment mounting side), and is also provided with a joint fitting mounting space 120. Since the both vertical frames are common to each other in use, function and effect, repetition of explanation is omitted.

[0147] The embodiments of the invention have been heretofore described. The hollow portions may be constructed by partially cutting the shaped sides instead of being fully surrounded therearound, and what is important in the explanation of the sides is that the above-mentioned positional relationships are present, and the sides they may be connected indirectly to one another by a slant or concave connection surface instead of being connected directly to one another.

EFFECTS OF THE INVENTION

[0148] 1) As described in details in the above, the frame construction of the invention for the subject 1) enables increasing the number of vertical frame legs beyond that in the prior art, and using many rows of holes for mounting of equipments. Also, such construction has an advantage that a cabinet for electronic and electric equipments can be reduced in manufacturing cost as compared with the case of using aluminum extruded materials.

[0149] 2) The invention presents the following effects for the subject 2).

[0150] 1. According to the invention of claim 5, when equipment mounting rails are to be mounted to sides, only removal of side panels permits easy mounting and eliminates the need of work from both front and back sides as in the prior art.

[0151] 2. According to the invention of claim 6, it is possible to mount equipment mounting rails to a vertical frame from both sides thereof.

[0152] 3. According to the invention of claim 7, a multiplicity of equipment mounting surfaces can be ensured to cope with diversification of internal equipments.

[0153] 4. According to the invention of claim 8, rigid frames are provided.

[0154] 5. According to the invention of claim 9, mounting of equipment mounting rails having the same length is enabled for both inside and outside mountings.

[0155] 3) As described above, equipment mounting and cable wiring between cabinets being connected is facilitated according to the invention of claim 10 since when a plurality of cabinets are to be connected to one another, an extent, by which joint fittings used for connection of adjacent vertical frames project from the vertical frames, decreases. Also, according to the invention of claim 11, portions, to which joint fittings are mounted, are made rigid, thus enabling rigid connection of heavy cabinets for electronic and electric equipments. Also, according to the inventions of claims 12, 13 and 14, equipment mounting sides are increased in number to facilitate mounting various internal equipments to vertical frames. Further, according to the invention of claim 15, a seal portion in contact with a front door is made hollow, which can advantageously make the entire vertical frame rigid in construction. 

What is claimed is:
 1. A frame construction of a cabinet or cabinets for electronic and electric equipments, the construction being such that a horizontal, cross section of each of vertical frame legs installed upright on four corners of a cabinet for electronic and electric equipments has a configuration comprising outer edge portions, first shaped sides bent from the outer edge portions in directions toward an inside of the cabinet, second shaped sides formed by bending inside ends of the first shaped sides in directions away from the corner, and wherein recessed spaces are defined in cross sectional regions interposed between the first shaped sides and the second shaped sides.
 2. The frame construction of a cabinet or cabinets for electronic and electric equipments, according to claim 1 , wherein the vertical frame legs comprise a recessed space at the corner.
 3. The frame construction of a cabinet or cabinets for electronic and electric equipments, according to claim 2 , wherein the vertical frame legs are T-shaped in cross section.
 4. The frame construction of a cabinet or cabinets for electronic and electric equipments, according to claim 2 or 3 , wherein a joint fitting or fittings are mounted in the recessed spaces to connect adjacent vertical frame legs to each other.
 5. A vertical frame construction of a cabinet or cabinets for electronic and electric equipments, the construction being such that a horizontal, cross section of each of vertical frame legs installed upright on four corners of a cabinet for electronic and electric equipments comprises shaped sides for outside mounting, which are disposed in parallel to outer wall surfaces of the cabinet and inside of the cabinet from the outer wall surfaces and include equipment mounting holes permitting work from the outer wall surfaces of the cabinet.
 6. The vertical frame construction of a cabinet or cabinets for electronic and electric equipments, according to claim 1 , further comprising shaped sides for inside mounting, which are disposed in parallel to the shaped sides for outside mounting and further inside of the cabinet therefrom, and include equipment mounting holes permitting work from a side of an inner chamber of the cabinet.
 7. The vertical frame construction of a cabinet or cabinets for electronic and electric equipments, according to claim 6 , further comprising shaped sides for vertical mounting, which are disposed perpendicular to the shaped sides for outside mounting and the shaped sides for inside mounting and on a side remote from the corner of the cabinet, and include equipment mounting holes.
 8. The vertical frame construction of a cabinet or cabinets for electronic and electric equipments, according to claim 7 , further comprising a first hollow portion disposed at the corner of the cabinet, and a second hollow portion projecting toward the inner chamber from the first hollow portion and provided with the shaped sides for outside mounting, the shaped sides for inside mounting and the shaped sides for vertical mounting.
 9. The vertical frame construction of a cabinet or cabinets for electronic and electric equipments, according to one of claims 6 to 8 , wherein the equipment mounting holes on the shaped sides for outside mounting, and the equipment mounting holes on the shaped sides for inside mounting are provided at substantially the same distance from the other outer wall surface of the cabinet perpendicular to the outer wall surface of the cabinet.
 10. A vertical frame construction of a cabinet or cabinets for electronic and electric equipments, the construction being such that a horizontal, cross section of each of vertical frame legs installed upright on four corners of a cabinet for electronic and electric equipments comprises a first equipment mounting side in parallel to a front door, a joint fitting mounting side, which is disposed in parallel to the first equipment mounting side and nearer to the front door than the first equipment mounting side is, and an outer end of which is connected to a side panel abutting side, and a joint fitting mounting space on a side of the joint fitting mounting side opposite to the front door.
 11. The vertical frame construction of a cabinet or cabinets for electronic and electric equipments, according to claim 10 , wherein a joint fitting mounting portion provided with the joint fitting mounting side is hollow.
 12. The vertical frame construction of a cabinet or cabinets for electronic and electric equipments, according to claim 10 or 11 , further comprising a second equipment mounting side provided perpendicular to the joint fitting mounting side and the first equipment mounting side.
 13. The vertical frame construction of a cabinet or cabinets for electronic and electric equipments, according to claim 12 , further comprising a third equipment mounting side provided in parallel to the second equipment mounting side.
 14. The vertical frame construction of a cabinet or cabinets for electronic and electric equipments, according to one of claims 10 to 13 , wherein the joint fitting mounting side serves also as a fourth equipment mounting side.
 15. The vertical frame construction of a cabinet or cabinets for electronic and electric equipments, according to one of claims 10 to 14 , wherein a seal portion in contact with the front door is hollow. 